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HID: logitech-dj: add support for non unifying receivers
We emulate the DJ functionality through the driver. The receiver supports "fake device arrival" which behaves like the probing of DJ devices. A non-unifying receiver has 2 USB interfaces, the first one generates standard keypresses and is compatible with the USB Keyboard Boot Subclass. The second interface sends events for the mouse and special keys such as the consumer-page keys. Events are split this way for BIOS / Windows / generic-hid driver compatibility. This split does not actually match with which device the event originate from, e.g. the consumer-page key events originate from the keyboard but are delivered on the mouse interface. To make sure the events are actually delivered to the dj_device representing the originating device, we pick which dj_dev to forward a "regular" input-report to based on the report-number, rather then based on the originating interface. Co-authored-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
parent
b6aeeddef6
commit
74808f9115
2 changed files with 274 additions and 39 deletions
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@ -763,7 +763,9 @@
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#define USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500 0xc512
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#define USB_DEVICE_ID_MX3000_RECEIVER 0xc513
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#define USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER 0xc52b
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#define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER 0xc52f
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#define USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2 0xc532
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#define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2 0xc534
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#define USB_DEVICE_ID_SPACETRAVELLER 0xc623
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#define USB_DEVICE_ID_SPACENAVIGATOR 0xc626
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#define USB_DEVICE_ID_DINOVO_DESKTOP 0xc704
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@ -100,9 +100,26 @@
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#define MEDIA_CENTER BIT(8)
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#define KBD_LEDS BIT(14)
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/* HID++ Device Connected Notification */
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#define REPORT_TYPE_NOTIF_DEVICE_CONNECTED 0x41
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#define HIDPP_PARAM_PROTO_TYPE 0x00
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#define HIDPP_PARAM_DEVICE_INFO 0x01
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#define HIDPP_PARAM_EQUAD_LSB 0x02
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#define HIDPP_PARAM_EQUAD_MSB 0x03
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#define HIDPP_DEVICE_TYPE_MASK GENMASK(3, 0)
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#define HIDPP_LINK_STATUS_MASK BIT(6)
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#define HIDPP_SET_REGISTER 0x80
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#define HIDPP_GET_LONG_REGISTER 0x83
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#define HIDPP_REG_CONNECTION_STATE 0x02
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#define HIDPP_REG_PAIRING_INFORMATION 0xB5
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#define HIDPP_PAIRING_INFORMATION 0x20
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#define HIDPP_FAKE_DEVICE_ARRIVAL 0x02
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enum recvr_type {
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recvr_type_dj,
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recvr_type_hidpp,
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};
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struct dj_report {
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u8 report_id;
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@ -130,6 +147,8 @@ struct dj_receiver_dev {
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struct kfifo notif_fifo;
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unsigned long last_query; /* in jiffies */
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bool ready;
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enum recvr_type type;
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unsigned int unnumbered_application;
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spinlock_t lock;
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};
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@ -435,6 +454,7 @@ static void dj_put_receiver_dev(struct hid_device *hdev)
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}
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static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
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enum recvr_type type,
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unsigned int application,
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bool is_hidpp)
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{
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@ -460,6 +480,7 @@ static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
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kref_init(&djrcv_dev->kref);
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list_add_tail(&djrcv_dev->list, &dj_hdev_list);
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djrcv_dev->last_query = jiffies;
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djrcv_dev->type = type;
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}
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if (application == HID_GD_KEYBOARD)
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@ -704,6 +725,94 @@ static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
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}
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}
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static void logi_hidpp_dev_conn_notif_equad(struct hidpp_event *hidpp_report,
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struct dj_workitem *workitem)
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{
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workitem->type = WORKITEM_TYPE_PAIRED;
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workitem->quad_id_msb = hidpp_report->params[HIDPP_PARAM_EQUAD_MSB];
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workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_EQUAD_LSB];
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switch (hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
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HIDPP_DEVICE_TYPE_MASK) {
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case REPORT_TYPE_KEYBOARD:
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workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
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POWER_KEYS | MEDIA_CENTER;
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break;
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case REPORT_TYPE_MOUSE:
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workitem->reports_supported |= STD_MOUSE;
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break;
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}
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}
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static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
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struct hidpp_event *hidpp_report)
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{
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/* We are called from atomic context (tasklet && djrcv->lock held) */
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struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
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const char *device_type = "UNKNOWN";
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struct dj_workitem workitem = {
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.type = WORKITEM_TYPE_EMPTY,
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.device_index = hidpp_report->device_index,
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};
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switch (hidpp_report->params[HIDPP_PARAM_PROTO_TYPE]) {
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case 0x01:
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device_type = "Bluetooth";
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break;
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case 0x02:
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device_type = "27 Mhz";
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break;
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case 0x03:
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device_type = "QUAD or eQUAD";
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logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
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break;
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case 0x04:
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device_type = "eQUAD step 4 DJ";
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logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
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break;
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case 0x05:
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device_type = "DFU Lite";
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break;
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case 0x06:
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device_type = "eQUAD step 4 Lite";
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logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
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break;
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case 0x07:
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device_type = "eQUAD step 4 Gaming";
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break;
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case 0x08:
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device_type = "eQUAD step 4 for gamepads";
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break;
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case 0x0a:
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device_type = "eQUAD nano Lite";
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logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
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break;
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case 0x0c:
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device_type = "eQUAD Lightspeed";
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break;
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}
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if (workitem.type == WORKITEM_TYPE_EMPTY) {
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hid_warn(hdev,
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"unusable device of type %s (0x%02x) connected on slot %d",
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device_type,
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hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
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hidpp_report->device_index);
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return;
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}
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hid_info(hdev, "device of type %s (0x%02x) connected on slot %d",
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device_type, hidpp_report->params[HIDPP_PARAM_PROTO_TYPE],
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hidpp_report->device_index);
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kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
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if (schedule_work(&djrcv_dev->work) == 0) {
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dbg_hid("%s: did not schedule the work item, was already queued\n",
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__func__);
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}
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}
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static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
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struct dj_report *dj_report)
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{
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dbg_hid("hid_input_report error\n");
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}
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static void logi_dj_recv_forward_input_report(struct hid_device *hdev,
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u8 *data, int size)
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{
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struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
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struct dj_device *dj_dev;
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unsigned long flags;
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u8 report = data[0];
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int i;
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if (report > REPORT_TYPE_RFREPORT_LAST) {
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hid_err(hdev, "Unexpect input report number %d\n", report);
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return;
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}
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spin_lock_irqsave(&djrcv_dev->lock, flags);
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for (i = 0; i < (DJ_MAX_PAIRED_DEVICES + DJ_DEVICE_INDEX_MIN); i++) {
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dj_dev = djrcv_dev->paired_dj_devices[i];
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if (dj_dev && (dj_dev->reports_supported & BIT(report))) {
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logi_dj_recv_forward_report(dj_dev, data, size);
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spin_unlock_irqrestore(&djrcv_dev->lock, flags);
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return;
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}
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}
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logi_dj_recv_queue_unknown_work(djrcv_dev);
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spin_unlock_irqrestore(&djrcv_dev->lock, flags);
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dbg_hid("No dj-devs handling input report number %d\n", report);
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}
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static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
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struct dj_report *dj_report)
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{
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return 0;
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}
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static int logi_dj_recv_query_hidpp_devices(struct dj_receiver_dev *djrcv_dev)
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{
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const u8 template[] = {REPORT_ID_HIDPP_SHORT,
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HIDPP_RECEIVER_INDEX,
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HIDPP_SET_REGISTER,
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HIDPP_REG_CONNECTION_STATE,
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HIDPP_FAKE_DEVICE_ARRIVAL,
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0x00, 0x00};
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u8 *hidpp_report;
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int retval;
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hidpp_report = kmemdup(template, sizeof(template), GFP_KERNEL);
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if (!hidpp_report)
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return -ENOMEM;
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retval = hid_hw_raw_request(djrcv_dev->hidpp,
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REPORT_ID_HIDPP_SHORT,
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hidpp_report, sizeof(template),
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HID_OUTPUT_REPORT,
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HID_REQ_SET_REPORT);
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kfree(hidpp_report);
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return 0;
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}
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static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
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{
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struct dj_report *dj_report;
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djrcv_dev->last_query = jiffies;
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if (djrcv_dev->type != recvr_type_dj)
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return logi_dj_recv_query_hidpp_devices(djrcv_dev);
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dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
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if (!dj_report)
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return -ENOMEM;
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struct hid_device *hdev = djrcv_dev->hidpp;
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struct dj_report *dj_report;
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u8 *buf;
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int retval;
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int retval = 0;
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dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
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if (!dj_report)
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return -ENOMEM;
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dj_report->report_id = REPORT_ID_DJ_SHORT;
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dj_report->device_index = 0xFF;
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dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
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dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
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dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout;
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retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
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/*
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* Ugly sleep to work around a USB 3.0 bug when the receiver is still
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* processing the "switch-to-dj" command while we send an other command.
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* 50 msec should gives enough time to the receiver to be ready.
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*/
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msleep(50);
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if (djrcv_dev->type == recvr_type_dj) {
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dj_report->report_id = REPORT_ID_DJ_SHORT;
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dj_report->device_index = 0xFF;
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dj_report->report_type = REPORT_TYPE_CMD_SWITCH;
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dj_report->report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
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dj_report->report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] =
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(u8)timeout;
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retval = logi_dj_recv_send_report(djrcv_dev, dj_report);
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/*
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* Ugly sleep to work around a USB 3.0 bug when the receiver is
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* still processing the "switch-to-dj" command while we send an
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* other command.
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* 50 msec should gives enough time to the receiver to be ready.
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*/
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msleep(50);
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}
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/*
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* Magical bits to set up hidpp notifications when the dj devices
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@ -910,6 +1083,16 @@ static int logi_dj_ll_raw_request(struct hid_device *hid,
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if (buf[0] != REPORT_TYPE_LEDS)
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return -EINVAL;
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if (djrcv_dev->type != recvr_type_dj && count >= 2) {
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if (!djrcv_dev->keyboard) {
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hid_warn(hid, "Received REPORT_TYPE_LEDS request before the keyboard interface was enumerated\n");
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return 0;
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}
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/* usbhid overrides the report ID and ignores the first byte */
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return hid_hw_raw_request(djrcv_dev->keyboard, 0, buf, count,
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report_type, reqtype);
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}
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out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC);
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if (!out_buf)
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return -ENOMEM;
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@ -1090,6 +1273,7 @@ static int logi_dj_hidpp_event(struct hid_device *hdev,
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{
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struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
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struct hidpp_event *hidpp_report = (struct hidpp_event *) data;
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struct dj_device *dj_dev;
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unsigned long flags;
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u8 device_index = hidpp_report->device_index;
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@ -1126,14 +1310,16 @@ static int logi_dj_hidpp_event(struct hid_device *hdev,
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spin_lock_irqsave(&djrcv_dev->lock, flags);
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if (!djrcv_dev->paired_dj_devices[device_index])
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/* received an event for an unknown device, bail out */
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goto out;
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dj_dev = djrcv_dev->paired_dj_devices[device_index];
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if (dj_dev) {
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logi_dj_recv_forward_report(dj_dev, data, size);
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} else {
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if (hidpp_report->sub_id == REPORT_TYPE_NOTIF_DEVICE_CONNECTED)
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logi_hidpp_recv_queue_notif(hdev, hidpp_report);
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else
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logi_dj_recv_queue_unknown_work(djrcv_dev);
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}
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logi_dj_recv_forward_report(djrcv_dev->paired_dj_devices[device_index],
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data, size);
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out:
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spin_unlock_irqrestore(&djrcv_dev->lock, flags);
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return false;
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@ -1143,8 +1329,30 @@ static int logi_dj_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data,
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int size)
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{
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struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
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dbg_hid("%s, size:%d\n", __func__, size);
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if (!hdev->report_enum[HID_INPUT_REPORT].numbered) {
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if (djrcv_dev->unnumbered_application == HID_GD_KEYBOARD) {
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/*
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* For the keyboard, we can reuse the same report by
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* using the second byte which is constant in the USB
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* HID report descriptor.
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*/
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data[1] = data[0];
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data[0] = REPORT_TYPE_KEYBOARD;
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logi_dj_recv_forward_input_report(hdev, data, size);
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/* restore previous state */
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data[0] = data[1];
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data[1] = 0;
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}
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return false;
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}
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switch (data[0]) {
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case REPORT_ID_DJ_SHORT:
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if (size != DJREPORT_SHORT_LENGTH) {
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@ -1168,6 +1376,8 @@ static int logi_dj_raw_event(struct hid_device *hdev,
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return logi_dj_hidpp_event(hdev, report, data, size);
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}
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logi_dj_recv_forward_input_report(hdev, data, size);
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return false;
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}
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@ -1195,6 +1405,10 @@ static int logi_dj_probe(struct hid_device *hdev,
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rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
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/* no input reports, bail out */
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if (list_empty(&rep_enum->report_list))
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return -ENODEV;
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/*
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* Check for the HID++ application.
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* Note: we should theoretically check for HID++ and DJ
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@ -1209,12 +1423,12 @@ static int logi_dj_probe(struct hid_device *hdev,
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* Ignore interfaces without DJ/HID++ collection, they will not carry
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* any data, dont create any hid_device for them.
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*/
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if (!has_hidpp)
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if (!has_hidpp && id->driver_data == recvr_type_dj)
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return -ENODEV;
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/* get the current application attached to the node */
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rep = list_first_entry(&rep_enum->report_list, struct hid_report, list);
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djrcv_dev = dj_get_receiver_dev(hdev,
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djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,
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rep->application, has_hidpp);
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if (!djrcv_dev) {
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dev_err(&hdev->dev,
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@ -1222,21 +1436,25 @@ static int logi_dj_probe(struct hid_device *hdev,
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return -ENOMEM;
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}
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if (!rep_enum->numbered)
|
||||
djrcv_dev->unnumbered_application = rep->application;
|
||||
|
||||
/* Starts the usb device and connects to upper interfaces hiddev and
|
||||
* hidraw */
|
||||
retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
|
||||
retval = hid_hw_start(hdev, HID_CONNECT_HIDRAW|HID_CONNECT_HIDDEV);
|
||||
if (retval) {
|
||||
dev_err(&hdev->dev,
|
||||
"%s:hid_hw_start returned error\n", __func__);
|
||||
goto hid_hw_start_fail;
|
||||
}
|
||||
|
||||
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
|
||||
if (retval < 0) {
|
||||
dev_err(&hdev->dev,
|
||||
"%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n",
|
||||
__func__, retval);
|
||||
goto switch_to_dj_mode_fail;
|
||||
if (has_hidpp) {
|
||||
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
|
||||
if (retval < 0) {
|
||||
hid_err(hdev, "%s: logi_dj_recv_switch_to_dj_mode returned error:%d\n",
|
||||
__func__, retval);
|
||||
goto switch_to_dj_mode_fail;
|
||||
}
|
||||
}
|
||||
|
||||
/* This is enabling the polling urb on the IN endpoint */
|
||||
|
@ -1250,14 +1468,16 @@ static int logi_dj_probe(struct hid_device *hdev,
|
|||
/* Allow incoming packets to arrive: */
|
||||
hid_device_io_start(hdev);
|
||||
|
||||
spin_lock_irqsave(&djrcv_dev->lock, flags);
|
||||
djrcv_dev->ready = true;
|
||||
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
|
||||
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
|
||||
if (retval < 0) {
|
||||
dev_err(&hdev->dev, "%s:logi_dj_recv_query_paired_devices "
|
||||
"error:%d\n", __func__, retval);
|
||||
goto logi_dj_recv_query_paired_devices_failed;
|
||||
if (has_hidpp) {
|
||||
spin_lock_irqsave(&djrcv_dev->lock, flags);
|
||||
djrcv_dev->ready = true;
|
||||
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
|
||||
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
|
||||
if (retval < 0) {
|
||||
hid_err(hdev, "%s: logi_dj_recv_query_paired_devices error:%d\n",
|
||||
__func__, retval);
|
||||
goto logi_dj_recv_query_paired_devices_failed;
|
||||
}
|
||||
}
|
||||
|
||||
return retval;
|
||||
|
@ -1280,6 +1500,9 @@ static int logi_dj_reset_resume(struct hid_device *hdev)
|
|||
int retval;
|
||||
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
|
||||
|
||||
if (djrcv_dev->hidpp != hdev)
|
||||
return 0;
|
||||
|
||||
retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
|
||||
if (retval < 0) {
|
||||
dev_err(&hdev->dev,
|
||||
|
@ -1336,9 +1559,19 @@ static void logi_dj_remove(struct hid_device *hdev)
|
|||
|
||||
static const struct hid_device_id logi_dj_receivers[] = {
|
||||
{HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
|
||||
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER)},
|
||||
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER),
|
||||
.driver_data = recvr_type_dj},
|
||||
{HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
|
||||
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2)},
|
||||
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2),
|
||||
.driver_data = recvr_type_dj},
|
||||
{ /* Logitech Nano (non DJ) receiver */
|
||||
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
|
||||
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER),
|
||||
.driver_data = recvr_type_hidpp},
|
||||
{ /* Logitech Nano (non DJ) receiver */
|
||||
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
|
||||
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2),
|
||||
.driver_data = recvr_type_hidpp},
|
||||
{}
|
||||
};
|
||||
|
||||
|
|
Loading…
Reference in a new issue